3573521 has 12 divisors (see below), whose sum is σ = 4188132. Its totient is φ = 3040128.

The previous prime is 3573517. The next prime is 3573523. The reversal of 3573521 is 1253753.

It can be written as a sum of positive squares in 2 ways, for example, as 261121 + 3312400 = 511^2 + 1820^2 .

It is not a de Polignac number, because 3573521 - 2² = 3573517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3573523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11261 + ... + 11573.

It is an arithmetic number, because the mean of its divisors is an integer number (349011).

Almost surely, 2^3573521 is an apocalyptic number.

It is an amenable number.

3573521 is a deficient number, since it is larger than the sum of its proper divisors (614611).

3573521 is a wasteful number, since it uses less digits than its factorization.

3573521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 553 counting only the distinct ones).

The product of its digits is 3150, while the sum is 26.

The square root of 3573521 is about 1890.3758885470. The cubic root of 3573521 is about 152.8852001702.

The spelling of 3573521 in words is "three million, five hundred seventy-three thousand, five hundred twenty-one".